Olivero's sidebar (.sidebar-grid .region--sidebar) is a bit too small, especially on the larger screens, to insert graphically interesting contextual blocks.
How to enlarge it safely?
I tried overriding in a custom-grid.css the grid-columns of '.sidebar-grid > .site-main, .sidebar-grid .region--sidebar' and apparently it works.
I'll probably have to increase the max-width of page-wrapper a little as well.
Then in cascade I will possibly have to make adjustments for the various @media.
We have a government client for whom we have built a Drupal website. Their IT Team has responded back with the following.
"When they are scanning they are attacking /admin/flush as a credentialed scan its doing a brute force as admin to this resource which is constantly doing a cache rebuild in drupal. As such the site never responds back by the time the second “attempt” happens and it falls over because constantly clearing the drupal cache never happens.